falchion vs sword

falchion and sword both are nouns.

Word	Noun	Adjective	Verb	Adverb
falchion	Yes	No	No	No
sword	Yes	No	No	No

As nouns, sword is a hypernym of falchion; that is, sword is a word with a broader meaning than falchion:

falchion: a short broad slightly convex medieval sword with a sharp point
sword: a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard

Other hypernyms of falchion include blade, brand, steel.

falchion (noun)	sword (noun)
a short broad slightly convex medieval sword with a sharp point	a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard